Modeling of watershed response to normal and extreme climatic conditions or to changes in the physical conditions of a watershed requires the simulation of a variety of complex hydrologic processes and process interactions. Some of these processes are well understood at a point or for a small area; others are poorly understood at all scales. Increasing spatial and temporal variability in climate and watershed characteristics with an increase in watershed area adds significantly to the degree of difficulty in investigating and understanding these processes. Research is needed to better define these processes and to develop techniques to simulate these processes and their interactions at all watershed scales. Project objectives are to investigate watershed hydrologic processes and process interactions to:

Improve understanding of watershed system dynamics

Develop computer models to simulate and evaluate the effects of various combinations of precipitation, climate, and land use on streamflow and other hydrologic components

Develop procedures and techniques to estimate model parameters by using measurable watershed and climatic characteristics.